Alright, let's work through 2663 times 5641 step by step
2663 × 5641 = 5641 × (2663)
+ 5641 × 3 giving us 16923
+ 5641 × 60 what gives us 338460
+ 5641 × 600 yielding 3384600
+ 5641 × 2000 producing 11282000

= 15021983
